Rotary pump or motor



July 26, 1932. R DUDLEY 1,869,053

ROTARY PUMP OR MOTOR I Filed April 1, 1930 5 Sheets-Sheet l INVENTOR.

Ff-- q EDMOND 2.000145) Q L m B Y ATTORNEYS.

July 26, 1932. E. R. DUDLEY 1,

ROTARY PUMP OR MOTOR Filed April 1, 1930 5 Sheets-Sheet 2 INVENTOR.

EDMOND E. DUDLEY BY M WE,

ATTORNEYS.

y 26, 1932- E. R. DUDLEY ROTARY PUMP OR MOTOR Filed April 1, 1930 3 Sheets-Sheet 3 IN VENTOR. EDMOND F. 01/045) ATTORNEYS.

Patented July 26, 1932 EDMOND R. DUDLEY, OF LOS ANGELES, CALIFORNIA ROTARY PUMP OR MOTOR REISSUED Application filed April 1, 1980. Serial No. 440,796.

My invention relates to and has for a purseal around the shaft, preventing the escape pose the provision of a rotary pump or motor which in one of its uses can be driven from a suitable source of power to effect the pumping of fluids with maximum efiiciency, and in another use will function as a prime mover of high efliciency by supplying fluid under pressure thereto.

Itis a further purpose of my invention to to provide a device of the above described character which will effectively pump liquids containing sand and other foreign particles such as is found in oil and water Wells, all without clogging ordamage by such foreign matter in the fluid being pumped.

I will describe only one form of rotary pump or motor embodying my invention and will thenpoint out the novel features thereof in claims.

In the accompanying drawings,

Figure 1 is a view showing in vertical longitudinal section, one form of rotary pump or motor embodying my invention;

Figure 2 is a transverse sectional View Z5 taken on the line 2-2 of Figure 1 and looking in the direction-of the arrows;

Figures 3 and 4 are transverse sectional views ona reduced scale, taken respectively on the lines 33 and 4-4 of Figure 1 and looking in the directions of the respective arrows, and

Figure 5 is a fragmentary sectional view taken on the line 55 of Figure 2 and looking in the direction of the arrows.

Referring specifically to the drawings in which similar reference characters designate similar parts in each of the several views, my invention in its present embodiment comprises a stator S constructed of metal to provide a central and open ended cylindrical section 10, and circular end sections 11 and 12 closing the open ends of the central sections and secured thereto in any suitable manner. The end sections 11 and 12 are provided axially with bearings 13v and 14 respectively, in which is journaled a shaft 15. The shaft 15 projects exteriorly of the section 12, through a suitable stufiing box 16 provided on thesection 12 so as to form a fluid tight of pressure from within the stator.

Fixed to the shaft 15 by a key 17 is a rotor R in the form of a cylinder reduced in diameter between its ends as indicated at 18 to co-act with the stator S in defining a continuous annular passage 19 between the stator and rotor.

The end portions of the rotor are slightly less in diameter thanthe internal diameter of the central section '10 of the stator, and interposed between such portions of the rotor and the central section are metallic liners 20-20, the confronting edges of which are rabbeted as indicated at 2121 to receive the edges of and clamp a liner 22 of yieldable material such as resilient rubber, against displacement from the inner periphery of the central section 10. The liner 22 thus forms the outer peripheral wall of the passage 19, and functions in a manner to ,be hereinafter described.

Supported from the central section 10 of the stator S are stator abutments A, and in the present instance three such abutments are shown and are radially disposed at equally spaced intervals circumterentially of the stator; The abutments A are all identical in construction and each comprisesm. rectangular plate 23 projecting through registering slots in the central section 10 and liner 22, into the passage 19 so as to span the latter transversely. .Each abutment A is provided with lateral flanges 24 seating in a recess 25 formed in the central section 10, and secured to the latter by bolts 26 so that the abutments will be rigidly supported in fixed positions in the stator. The plate 23 of each abutment A is slotted from its innermost edge to slidably receive a yieldable packing member 27 of resilient rubber, and a metal pressure bar 28. which abuts the member and is engaged by screws 29. The screws 29 are threaded into .the abutment and are operable when rotated, to force the packing member radially inward into engagement with the periphery of the rotor B in the passage 19 and thus form a fluidtight seal.

For co-action with the stator abutments A I provide a plurality of rotor abutments A of which four are shown in the present instance. The rotor abutments are rotatably mounted in the rotor R, eccentrically of and parallel to the axis of the rotor at equally spaced intervals circumferentially.

The rotor abutments A are identical in construction and each comprises a cylindrical body reduced in diameter atits ends to provide journals and 31 rotatably mounted in bearin 3232 in the rotor so that the bod pro ects into and spans thg passage 19 and as rolling contact with the 'yieldable liner 22 which latter functions as a result of its yieldability, to provide a fluid tight seal between the rotor abutments and the stator during rotation of the rotor.

Fixed to the extremity of the journal 30 of each rotor abutment A is a gear 33 constantly meshing with an internal ringgear 34 fixed to the central section 10 of the stator so that during rotation of the rotor,the rotor abutments W111 be rotated and thus planet about the axis of the rotor. In order to enable the rotor abutments to pass the stator abutments during rotation of the rotor, the body of each rotor abutment is provided with a recess 35 into which the stator abutments are received in successive order, due to the timed relationship between the rotational movement of the rotor and the combined rotational and planeting movements of the rotor abutments. It will be noted that the periphery of the body of each rotor abutment A is provided with grooves 36 extending longitudinally of the body and co-acting with the rotor and with the liner 22 to form ockets for receiving and conveying throng the passage 19 any solid particles or other foreign matter such as sand, so as to prevent clogging of and possible damage to the device. a a

For each stator abutment A, an inlet 37 and an outlet 38 is provided in the stator so as to communicate with the passage 19 at op osite sides of the statorabutment and thus be separated by the latter. The inlets 37 are connected to a main inlet pipe 39 by means of an arcuate branch pipe 40, whereas the outlets 38 are connected to a main outlet ipe 41 by a branch pipe 42 also of arcuate orm.

An oil feed pipe 43 leading from a source of oil supply under pressure (not shown) is connected to the end section 11 of the stator S and communicates through a duct 44 with a chamber 45 in the stator so as to provide lubrication for the gears 33 and'34. A water feed pipe 46 is connected to the end section 12 of the stator and communicates through a duct 47 with a chamber 48 in the stator at one end of the rotor, and a second water feed pipe 49 is connected to the central section 10 of the stator and communicates through a duct 50 with the periphery of the .in the rear of each rotor abutment.

rotor adjacent its opposite end. During the operation of the device, water or other fluid under pressure from a suitable source of supply (not shown) is supplied to the pipes 46 and 49 and sets up counter pressures in the stator at opposite sides of the passage 19, sufficient to confine any fluid in the passage against escape therefrom between the rotor and stator, thus preventing any loss of pressure developed by the device during its operation.

In the use of -my invention as a pump, its operation is as follows:

\Vith the rotor B driven in the direction of the arrow in Fi ure 2, the rotor abutments A will be driven y the gears 33 and will be rotated in the directions of their respective arrows as shown in this figure. Asv each rotor abutment passes one of the inlets 37, it will co-act with the respective stator abutment A to induce suction in the passage 19 between the rotor abutment and the stator abutment, so that with the main inlet pi e 39 connected to a source of fluid to be pumped, fluid will be drawn into the passage Furthermore pressure will be set up in the passage 19 between each rotor abutment and the particular stator abutment immediately in advance thereof, so that as operation of the rotor continues, the fluid drawn into the passage 19 by any, one rotor abutment will be advanced in the passage by the next succeeding rotor abutment and forced through'one of the outlets 38 to the main outlet pipe 41.

By the provision of three stator abutments and four rotor abutments as shown, a continuous pumping of the fluid will be efiected, as three of the four rotor abutments are at all times active to pump the fluid. It will be appreciated that the principle embodied in my invention can be practiced with but a single stator abutment and a single rotor abutment, which arrangement however has the disadvantage of producing an intermittent pumping action rather than the most desirable and eflicient continuous pumping of a fluid.

. In the use of my invention as a motor or prime mover, it will be clear that by supplying a fluid under pressure to the main inlet pipe 39, the fluid in entering the passage 19 through the inlets 37 will set up pressure in the passage, causing the rotor and stator abutments to co-act in rotating the rotor R in'the direction of the arrow in Figure 2; the pressure fluid after use, being discharged from the passage through the outlets 38.

Although I have herein shown and described only one form of rotary pump or motor embodying my invention, it is to be understood that various changes and modifications may be made therein without departing from the spirit of the invention and the sp1r1t and -scope of the appended claims.

, I claim as m invention:

1. A device the character described-comprising a cylindrical stator, a cylindrical rotor journaled axially in the stator and reduced in diameter intermediate its ends to define an annular passage between the stator and rotor having an inlet and an outlet, the rotor being of less diameter than the internal diameter of the stator, metallic liners interposed between the stator and the end portions of the rotor, a liner of yieldable material interposed between the stator and the intermediate portion of the rotor, co-acting means on said liners for securing the yieldable liner against displacement, and co-acting means on the stator and rotor, responsive to rotation of the rotor, to pump fluid from the inlet through the passage to the outlet.

2. A device of the character described comprising a c lindrical stator, a cylindrical rotor journale axially in the stator and reduced in diameter intermediate its ends to define an annular passage between the stator and rotor having an inlet and an outlet, the

retor beingof less diameter than the internal oiameter of the stator, metallic liners interposed between the stator and the end portions of the rotor, a liner of yieldable material interposed between the stator and the 3 intermediate portion of the rotor,the confronting edges of the metallic and yieldable liners having rabbeted engagement to secure the yieldable liner against displacement, and co-acting'means on the stator and rotor, re-

sponsive to rotation of the rotor, to pump fluid from the inlet through the passage to the outlet. EDMOND R. DUDLEY. 

